Apparatus for electroplating



Jan.1o,192s 1,655,781

G. CARACCIO APPARATUS FOR ELECTROPLATING Filed Aug. 5. 1926 la le fr: Venfof 6 Coface/o 3f Patented Jan. 10, 1928.

UNITED STATES srovnmrr camcom, or GENOA, ITALY.

rumanos non nLEcTnoPLa'i-me.

Application nled August 31986, Serial No. 180,787, and in Germany August 10, 1825.

The invention refers to an electrolytic cell for electro-plating On the cover of which are provided fastening means for the cathode.

5 According to the present invention these fastening means consist in screws of conducting material which penetrate circular holes of the cathode and carr clam s which can be adjusted axially andV radia y with res ect to the axis of the screws, so as to ena le the clamps to be pressed against the walls Of the hole Of the cathode, whereby the cathode is connected with the screw.

This arrangement presents the advanta e of a very simple and safe fastening of t e Object or cathode which has to be subjected tothe electroplatin In addition, the distance of the catho e from the anodes can be regulated exactly in`the simplest manner.

The accompanymg drawings show examples of constructions of the device accordin to the invention AFigure 1 is a vertical sectional middle view of the apparatus;

g5 Figure 2 is a top view of Figure 1 and in the right'half with the cover taken off;

Figure 3 is a partial sectional view ac cordin toline 3-3 of Figure 2.

A In ese figures 1 is a rectangular receptacle ofuno -conductive material, which cannot be attacked by the bath adopted for electroplating'.I 2 is the bottom thereof, 3 the cover, l are threaded bolts supplied with winged nuts for fastening the cover On the receptacle. 6v is a strip of material which extends along the edge of the cover and which engages a corresponding groove 7 of the receptacle, which 1s supplied with a packing by means of whic an air-tight closure of the cover is obtained. 8 are the anodes; 9 are the wire clamps for the anodes; 10 are the screws connected with the cover by nuts and locknuts 11; 12 are metal discs forming the clamps for fastenin the 4.5 cathode. 13 are holes in the catho e' 14.-

' against the walls of which is pressed the circular edge of the discs. 15 socket Offnon-conductive material; 16 is a nut On the screw 10; 17 is another tubular 5o socket also of non-conductive material, carjusted axially spect to the axis of is a tubular ried by the lower end of the screw 10 and which presses against the lower disc 12. 18 are handles for grasping the cover they Serve in the present form of constructlon Of the invention also as conducting means for the current. 19 is an opening 1n the cover for filling in the electrolytic bath or the cleanmg liquid for washin out the receptacle; 20 is a discharge co5( in the bottom Of the receptacle. liquid in the receptacle provided with a cock 22 for the discharge Of gases. 23 are pivots on the walls of the receptacle for supporting same in adapted bearings in case thegalvanic treatment has to be effected while the bath is in motion,

Having now particularly described and ascertained the nature of my said invention and in what manner the same'is to be performed, I declare that what I claim is 1. Improvements in an apparatus for electroplating characterized by a rece tacle with a cover which is supphed with astening` means for the cathode, these fastening means consisting of screws of conductive material, which penetrate circular holes of the cathode and carry clamps, which can be adas well Vas radially with rethe screw, so as to be pressed against the wall of the hole of the cathode, wherebyv the cathode is connected with the screw.

2. Improvements in an apparatus for electroplati'ng according to claim l, characterlzed in this that the clamp consists in two curved elastic plates abutting against each other at their edges, one `plate bearing against the end face Of a socket of nonconductive material co'axiallyarralged on the screw and the other end face o which aring against the cover of the receptacle, while the other plate which is held by a second socket threaded On the screw is pressed against the lrst. plate by that the screw is entirely effect Of the bath.

In testimony whereof I have signed my name to this specification.

a nut, so protected from the 2l is a gauge vfor the noem GIOVANNI OARACOIO., v 

